An Implementation of Loyalty Program Theory Based on Recency Frequency Monetary Score in Information Systems to Increase Customer Loyalty. J. Inf. Syst. Explor. Res. [інтернет]. 31, Січень 2025 [цит. за 25, Серпень 2026];3(1):45-52. доступний у: https://shmpublisher.com/index.php/joiser/article/view/538